Math and Arithmetic

Statistics

Indiana University

# How do you find variance?

Top Answer

###### Wiki User

###### February 11, 2013 4:47PM

You calculate it using the appropriate formula, which, given the limitations of this site, is not easy to reproduce. However, you can easily Google the formula.

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### How do you find the z score of 12.5?

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To find the Z score from the random variable you need the mean and
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To find the Z score from the random variable you need the mean and
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### Can standard deviation equals to variance?

The variance is the square of the standard deviation.
This question is equivalent to
can s = s^2
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If the standard deviation is 1 exactly, then so is the
variance.
If the standard deviation is 0 exactly, then so is the
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If the standard deviation is anything else, then it is not equal to
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### What is a difference between a pooled variance and a combined variance?

Pooled variance is a method for estimating variance given
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See links.